docstr: rf_layers   :    rf_layers rf_layer_stmt
  |    rf_layer_stmt
docstr_tok: ["rf_layers",":","rf_layers","rf_layer_stmt","|","rf_layer_stmt"]
code: def p_rf_layers(self, p):
      """rf_layers   :    rf_layers rf_layer_stmt
      |    rf_layer_stmt
      """
      pass
  
file_path: nnabla/python/src/nnabla/utils/converter/nnabla/opt_parser.py
imports: from ply import yacc
  from .opt_graph import Token
label_desc: Use image node_id 4 for calling the OptimizerParser obj's underlying member method code with example usage: obj.p_rf_layers(p) without return types